John k



J. K. GUMPPER.

l l WHEEL REMOVING' T0013-, APPLICATION FILED IuNEYIs. 19m.

1,311,272. f 'PaIenIedJuIyza 1919.

UNITED sTATEs vPATENT onirica.

.Torna x. GUivIPrER, or` DECATUR, ILLINoIs, AssIGNoR or ONE-HALF To w. II. wooLUMs,

or DECATUB., ILLINOIS.

WHEEL-REMOVING TooL.

Specification of Letters Patent.

Patented July 29, 1919.

Application led .T une 13, 1918.' Serial No. 239,747.

To all whom t may concern Be it known that I, JOHN K. GUMP'IER, a citizen of the United States, residing at De-V catur, in the county of Macon and State of Illinois, have invented a certain new and useful Improvement in Vheel-Removing Tools, of which the following is a full7 clear,

concise, and exact description, reference be#v great withdrawing force can easily be ap.

' plied-'to the wheel; and which shall consist the end of the axle, and a screwvfor engaging of butV a few substantial members or parts.

Myinvention consists in a `wheell tool or jack adapted to engage the outer end of a wheel hub and provided with a powerful pressure member for engaging the outer end i of the axle.

My invention also consists ina device of4 the character described, provided with a pair of pivotally mounted clamping jaws for engaging with the outer end of the wheel` hub, atension member for clamping thejaw'suponthe hub, the member formed: to ,pass

with the end of the axle.l if' My invention also consists of the several features of construction and in the combina.-

tions and arrangements of parts by which I scribed and particularly pointed out inthe A adaptedfor engagement with the thread 5 of appended claims.` v n My invention will be more readily under- Stood by reference` tofthe accompanying drawing forming-part of this specification and in which: y

Figure lis a vertical centra] section of a wheel removing tool embodying my inven .tion and illustrating its application to a wheel hub and axle, andy taken on'rthe line 1-"1 of Fig. 2;

Fig. 2 is an end view ofthe tool wheel hub; and

Fig. 3 is a transverse section on the line 3*?, of Fig. i.

In said drawings l is the outer end portion of an axle such as a `live axle of` an automobile, and which is'usually made on a long taper as shown, to receive the wheel hub',` which is` provided with a tapered central hole 3 for receiving, the axle l. The axle is often provided with one or more longitudinal keys 26 for driving engagement with the wheel hub. The hub is forced tightly upon the axle and wedges upon the long tapered end Vwith great force so that it often becomes verydiflicult to start the hub off .of the axle, when necessity requires, and it becomes necessary to use great pressure to remove it. Other features which add difficulties tothe operation of removing the hub are that the hub and axle are fitted for engage ment with other parts, usually screw threaded parts, and consequently if a hammer or like tool is used,'destructive damage is likely to ensue.

AFor'pulling the wheel oli" of the axle I provide "means for engaging the outer endV of the wheel hub, so that I can pull upon it, f and I provide means for pushing upontheaxle, so that the force which I apply is effectively applied to these two members.

Usually the outer end 4 of the hub 2 is provided with a screw thread 5 for the re-v ception of a hub capor nut, not shown, and' the threaded end 6 of the axle projects beyond the end of the hub'.V

I Vhile I could provide otherfmeansfor engagement with the thread 5 of the hub, I

y prefer, on account of the variation in diameter of tliewheel hub ends, to-provide means which. are readily adjustable to it wheel hubs of slightly varying sizes and arranged to be firmly `clamped thereon.V

I provide a pair of jaws 7 and 8 each having an internally threadedv outer end 9 members between the bridge member 10 and" the point of engagement with the hub.

I preferably form the bridge member l0 with a pair of pivot lugs 12 at each side to receive the pivot pins 11 and I formthe jaws 7 and 8 with central hubs 13 at their rear ends, fitting Vbetween the lugs 12 and receive ing the pivot pins ll. jaws are centrally mounted upon the bridge member and the strains of opei'ation are balanced.

To hold the jaws 7 and 8 upon the threaded end for operation, I provide a tension clamping member' lll in the form of a bolt. This bolt passes through holes 15 and 16 inthe respective jaw members 7 and S, and is provided with a swivel head 17 on one end for engagement with the member 8 and isthreaded on its opposite end 1S to receive the winged thumb nut 19. By means of this tension member I can easily and yquickly firmly clamp the jaws upon the hub and I can readily spread the aws apart sufficient to permit the direct placement of the jaws upon the hub and their removal therefrom without the necessity of screwing them on or i oil'. To prevent interference between `the tension member and the projecting end (S of the axle Iprovide an open ring portion 2O at the middle of the tension member, providing a central opening 21 large enough to freely span the end of the axle.

To apply pressure to the axle I provide a set screw 22 centrally mounted in the bridge memberlO in axialalinement with the axle I and provided with a coned point '23 adapted to Venter avcenter countersink 2e which is usually7 left in the outer end of every axle.

Whenthe device has been clamped upon the wheel hub as shown, great pressure can bereadily and easily applied to the axle to pull off the hub by screwing the set screw in against the end of the axle by means of a suitable wrench applied to the square head 25V of the set screw.

As many modifications of myinvention will readily suggest themselves to one skilled in the art, Ido not, limit or confine my in-A vention to the, specific structures herein shown and described except as required by the scope of the appended claims.

I claim:

l. A device ofr the character described comprising a bridge member, a pair of arms pivotally mounted on the bridge member for engagement with the periphery of the outer end of a wheel hub, a tension member arranged adjacent to the outer ends of said providedwith screw threads at their ends for engagement with the, screw threaded By this lmeans the outer end of a wheel hub, a tension member for clamping the jaws upon a hub, said tension member having an opening in its'middle portion for passing an axle end within'the hub, and a set screw carried by the bridge member for exerting pressure against the axle.

3. In a device of the character described, a bridge member for spanning a hub, a set screw mounted in the bridge member for engagement longitudinally with an axle, two oppositely disposed clamping arms, pivotally mounted at their 'rear ends upon the bridge member upon pivots spread aparta distance substantially equal to the diameter of the hub at its point of engagement, the forward ends of the armsprovided with internal screw threads for engagement with an externally threaded outer end of the hub, and a tension member arranged adjacent to the outer ends ofsaidarms for clamping them. upon a hub. l

4. In a device of the character described, a bridge member for spanning ahub, a set screw mounted in'thebridge member for `engagement longitudinally with anvaxlefV two oppositely disposed clamping arms pivoted at their rear ends upon the bricgeimember,

theirv forward ends provided'with. .internal screw threads-:tor engagement withV anexternally threaded outerend of a hub, a tension rod having engagement withy said arms, adjacent to their outer ends for yclamping them upon a hub, said tension rod'` having an opening at its middle portion for 'spanning an axle-end projecting beyond the outer end of the hub upon which the device is clamped. i

5. -In la wheel pulling device,l a hub ment ber having extending arms, one of which is pivotally mounted `on the hub,` a bolt` carried' by said arms. for Vclamping them uv'p'onaJ wheelvhubpa head on the Abolt having a swivel contact with'one of'the armsy'anda pressure device carried by 'said hub for pushing anaxle out fof a .wheellhub upon which the device is clamped. Y

6. In a wheel removing device, a bridge member, a pair of hub camping jawsl'carried` by the bridgemember,'one'of said j aws4 being pivotally mounted on the-bridge Amerrie ber, said jaws'being providedwith fscrrew threadsat their ends for 'engagement with the screw threaded outerend of a' wheel lrub,=` a tension member for clamping the jaws" upon ahub, said tension member Ahaving an opening inA its middle portion forE passing an axle end within the hub, and aset screw carried by the bridgeV member forA exerting pressure against an axle clamped by the jaws. i 'i In witness whereof I hereunto subscribe my name this 10thday of June, A. DQlQlS.A

JOHN K. GUMPPERI.

j., Copies' of this patentmaybeobtained forgive cents eachaby addressingthe ommissio'ner orE Patents;`

Washington, D. C. i 

